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This is a common issue with the Logitech K350 and there is no simple fix for it. It is simply a defect. On the plus side, this keyboard has a 3 year warranty. The best course of action for anyone who is having this problem is to contact Logitech customer support to get a replacement.

you can open it given that u know how to take it out and put it back without breaking it... and also i would say that u dont have to do it... it wont make much changes and also what will u clean inside a mouse??? there wont be much dust inside... probably u can clean the bottom part... for easy movement... and also if u open the mouse, the warranty (if u have one) will be tampered...

By a flash drive I'm guessing you mean a USB stick. What you need to is find a USB port on your computer/laptop and plug it in. There might be a synchronize button on the mouse and USB stick if so you need to press them both and then your mouse should be working. I hope this helps. :)

It looks like a wireless keyboard and mouse. My Logitech keyboard and mouse have a USB 2.0 receiver, which plugs into any USB 2.0 port. Some have small USBreceivers that look like memory sticks. It might be mounted on the bottom of the keyboard or the mouse. My receiver is a small box with a wire that runs to the back of the computer and plugs into the USB port. The receiver has a connect button to send a signal to the mouse and keyboard. Once they are installed you can use the button to make the mouse and keyboard recognized, by the OS.

on the bottom of the GE wireless mouse there is a connect button make sure to push it one time then on the usb there is a connect circle hold it as if you were going to pinch it sounds dumb but I was just having the same problem and I read one of the solution fixes and it said to push connect button on back of mouse and also push it on the usb where it says connect even though the one that you push on the usb stick isn't a button but it is sensed once held with pointer finger and thumb hope this better describes it to fix it